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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html>
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<title>OpenALExample - /MyOpenGLView.m</title>
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<a href="http://developer.apple.com/">ADC Home</a> > <a href="../../referencelibrary/index.html">Reference Library</a> > <a href="../../samplecode/index.html">Sample Code</a> > <a href="../../samplecode/Cocoa/index.html">Cocoa</a> > <a href="../../samplecode/Cocoa/idxGames-date.html">Games</a> > <A HREF="javascript:location.replace('index.html');">OpenALExample</A> >
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<td><h1><div id="pagehead">OpenALExample</div></h1></td>
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<h2>/MyOpenGLView.m</h2>
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<p><strong>View Source Code:</strong>
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<p><strong><a href="OpenALExample.zip">Download Sample</a></strong> (“OpenALExample.zip”, 4.44M)<BR>
<strong><a href="OpenALExample.dmg">Download Sample</a></strong> (“OpenALExample.dmg”, 4.71M)</p>
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<pre class="sourcecodebox">/*
File: MyOpenGLView.m
Abstract: Custom NSOpenGLView
Version: <1.0>
© Copyright 2005 Apple Computer, Inc. All rights reserved.
IMPORTANT: This Apple software is supplied to
you by Apple Computer, Inc. ("Apple") in
consideration of your agreement to the following
terms, and your use, installation, modification
or redistribution of this Apple software
constitutes acceptance of these terms. If you do
not agree with these terms, please do not use,
install, modify or redistribute this Apple
software.
In consideration of your agreement to abide by
the following terms, and subject to these terms,
Apple grants you a personal, non-exclusive
license, under Apple's copyrights in this
original Apple software (the "Apple Software"),
to use, reproduce, modify and redistribute the
Apple Software, with or without modifications, in
source and/or binary forms; provided that if you
redistribute the Apple Software in its entirety
and without modifications, you must retain this
notice and the following text and disclaimers in
all such redistributions of the Apple Software.
Neither the name, trademarks, service marks or
logos of Apple Computer, Inc. may be used to
endorse or promote products derived from the
Apple Software without specific prior written
permission from Apple. Except as expressly
stated in this notice, no other rights or
licenses, express or implied, are granted by
Apple herein, including but not limited to any
patent rights that may be infringed by your
derivative works or by other works in which the
Apple Software may be incorporated.
The Apple Software is provided by Apple on an "AS
IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING
THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE
OR IN COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY
SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE,
REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF
THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
UNDER THEORY OF CONTRACT, TORT (INCLUDING
NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN
IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
#import "MyOpenGLView.h"
@implementation MyOpenGLView
//////////////////////////////////////////////////////
//Override NSView's initWithFrame: to specify our pixel format:
//Note: initWithFrame is called only if a "Custom View" is used in Interface BBuilder
//and the custom class is a subclass of NSView. For more information on resource loading
//see: developer.apple.com (ADC Home > Documentation > Cocoa > Resource Management > Loading Resources)
- (id) initWithFrame: (NSRect) frame
{
GLuint attribs[] =
{
NSOpenGLPFAAccelerated,
NSOpenGLPFADoubleBuffer,
NSOpenGLPFANoRecovery,
NSOpenGLPFAColorSize, 32,
NSOpenGLPFADepthSize, 16,
0
};
NSOpenGLPixelFormat* fmt = [[NSOpenGLPixelFormat alloc] initWithAttributes: (NSOpenGLPixelFormatAttribute*) attribs];
if (!fmt)
NSLog(@"No OpenGL pixel format");
if(!scene)
scene = [[Scene alloc] init];
return self = [super initWithFrame:frame pixelFormat: [fmt autorelease]];
}
- (void) dealloc
{
//remember to clean up!
[scene release];
[super dealloc];
}
#pragma mark OpenGL drawing
// update the projection matrix based on view size
- (void) updateProjection {
//get bounds
NSRect bounds = [self bounds];
//define the viewport
glViewport(0, 0, (GLsizei) bounds.size.width, (GLsizei)bounds.size.height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
//define "the world" window
gluOrtho2D(0.0, bounds.size.width, 0.0, bounds.size.height);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
// Override the view's drawRect: to draw our GL content.
- (void) drawRect: (NSRect) rect
{
[[self openGLContext] makeCurrentContext];
[self updateProjection];
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
//draw Objects
[scene drawListener];
[scene drawSources];
[[self openGLContext] flushBuffer];
}
#pragma mark Mouse Click Handling
- (void)mouseUp:(NSEvent *)theEvent {
[scene resetCurrentObject]; //selects "No object"
}
//View Accepts Mouse down events
- (void)mouseDown:(NSEvent*) event {
NSPoint eventLocation = [self convertPoint:[event locationInWindow] fromView:nil];
//set the listener position to the new mouse location
if([scene selectCurrentObject:&eventLocation] >=0) {
[scene setObjectPosition:&eventLocation];
}
//redraw screen, calls drawRect
[self setNeedsDisplay:YES];
}
- (void) mouseDragged:(NSEvent*) event {
[self mouseDown:event];
}
#pragma mark FirstResponder Changes
- (BOOL)acceptsFirstResponder
{
return YES;
}
- (BOOL)becomeFirstResponder
{
return YES;
}
- (BOOL)resignFirstResponder
{
return YES;
}
#pragma mark Get/Set
- (Scene *)scene {
return [[scene retain] autorelease];
}
- (void)setScene:(Scene *)value {
if (scene != value) {
[scene release];
scene = [value copy];
}
}
@end</pre>
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<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=1&url=/samplecode/OpenALExample/listing5.html%3Fid%3DDTS10003587-1.0&media=dvd" target=_new>Yes</a>: Tell us what works for you.</div>
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